After some setbacks, in The Vampire Diaries season 6, episode 20, "I'd Leave My Happy Home For You", Elena was finally able to consume it. With Damon by her side, Elena got everything she had wished for since becoming a vampire. As well as rendering her human, the cure also had a bonus side effect.

Does Elena's compulsion go away?

Elena's compulsion was still in effect after Alaric crossed the border and Jo saved his life, yet when Stefan took the cure everyone he ever compelled went back to normal.

Does Elena get her memories back in Vampire Diaries?

Thursday night's new episode, "Black Hole Sun," revealed that Alaric can give Elena her memories back on TVD — all she has to do is read the journal entry he wrote her and ask. Yep, it's that easy.